13. a 272- 3r - 15 = 0 b. 7h2 + 12 < 0 c. 3r2 + 5r - 220 Which of the following quadratic inequality x>-2 illustrate the solution set on the + + q + 0 1 2 - 2 - 1 + t + + d. + -2 0 1 2 -2 - 1 Which of the following quadratic inequality y 2 -2 illustrate the solution set on + + 1 - 2 - 1 0 1 - 2 NT2 b. d. + 1 -2 - 2 - 1 0 2 15. c. 25 16. In simplest form, 225 is 15 b. 30 What are the roots of 2x2 - 50 = 0? a. X=35 b. x= +10 c. x = 16 What are the roots of (x - 2)2 = 16? 6 an8d -2 b. 6 and 2 c. 6 and 2 ntio conation are -5 and 3. Which of the following qua - 17 . 8.